| M & B Fruit Juice Products Co. | M&CP Farms* D. Beccares Ltd., dba M&CP Farms | M. Slavin & Sons |
| M.C.I. Foods, Inc. | Macabee Foods, Inc.*Factory of Bylada Foods, LLC. | Macgregors Meat & Seafood, Ltd. |
| Mada'n Corp. | Madelipeche Inc. | Madera Quality Nut, LLC |
| Maid-Rite Steak Co., Inc. | Malt-O-Meal Co.*Factory of Malt-O-Meal Company. | Mama Rosie's Ravioli Co. |
| Mamma Bella Foods*Factory of T. Marzetti Co. | Manchester Farms, Inc. | Manda Fine Meats |
| Mann Packing Co., Inc. | Manzana Products Co., Inc. | Maple Grove Cheese |
| Maple Island, Inc. | Maple Leaf Consumer Foods | Maple Leaf Farms, Inc. |
| Maple Leaf Foods, Inc. | Maplehurst Bakeries, LLC | Mar-Jac, Inc. |
| Marathon Cheese Corp. | Marburger Farm Dairy, Inc. | Marcus Dairy, Inc. |
| Mariah Foods*Factory of Peer Foods Inc. | Mariani Packing Co., Inc. | MarketFare Foods, Inc. |
| Mars Pet Care US*Factory of Mars Incorporated. | Marshall Biscuit Co., Inc.* Sister Schubert's Homemade Rolls | Martens Country Kitchen Products |
| Maruha Corporation | Marukan Vinegar Co. Ltd. | Marvid Poultry, Inc. |
| Maryland & Virginia Milk Producers Co-op | MasterFoods USA*Factory of Mars Incorporated. | Matador Processors, Inc. |
| Mathews Packing Co. | Maui Land & Pineapple Co., Inc. | Mauna Loa Macadamia Nut Corp. |
| Maverick Ranch Natural Meats | Mayer Brothers Apple Products, Inc. | Mayfield Farms Ltd. |
| MBA Poultry | McCadam Cheese*Factory of Agri-Mark, Inc. | McCain Foods Limited |
| McCain Snack Foods*Factory of McCain Foods USA Inc. | McCormick & Company, Inc. | McCutcheon Apple Products, Inc. |
| McIlhenny Company | McLure's Honey & Maple Products*Factory of Dutch Go | MDR Laboratory*Factory of Dixie Dew Products, Inc. |
| Meadow Brook Dairy*Factory of Dean DSD Dairy. | Meadowvale, Inc. | Meister Cheese Co. |
| Melrose Dairy Proteins | Menu Foods, Ltd. | Mersey Seafoods Ltd. |
| Metompkin Bay Oyster Co., Inc. | Mexican Original*Factory of Tyson Prepared Foods Gr | Michael Angelo's Gourmet Foods, Inc. |
| Michel St. Arneault Inc. | Michigan Blueberry Growers Association | Michigan Freeze Pack |
| Michigan Turkey Producers | Middlefield Cheese | Milfico Foods, Inc. |
| Milkco, Inc. | Miller's Honey Company, Inc. | Milne Fruit Products, Inc. |
| Milroy Canning Co., Inc. | Minh Food Corp.*Factory of The Schwan Food Co. | Minute Maid Co., Canada*Factory of Coca-Cola Limite |
| Miramar Fruit Trading Co. | Miscoe Springs*Factory of Garelick Farms. | Mission Foods Corp. |
| Mission Foods Southeast, Inc.*Factory of Mission Fo | Mister Cookie Face | Mizkan Americas, Inc. |
| Model Dairy*Factory of Dean DSD Dairy. | Mohawk Packing Co.*Factory of John Morrell & Co. | MolliCoolz, LLC |
| Mondiv Food Product Inc. | Monogram Meat Snacks | Monterey Gourmet Foods, Inc. |
| Montreal Chop Suey Co., Ltd. | Mooney Farms | More Than Gourmet |
| Morey Seafood International | Morinaga Nutritional Foods, Inc. | Morning Star Packing Co. L.P. |
| Morningstar Foods*Factory of White Wave-Morningstar | Morrison Frozen Foods*Factory of C.H. Guenther & So | Morrison Milling*Factory of C.H. Guenther & Son, In |
| Morse's Sauerkraut | Mother's Kitchen, Inc. | Mountain Meadows Lamb Corp.*Factory of Superior Far |
| Mountaire Corp. | MPK Sonoma Corp.* Marinpak Corp., dba MPK Sonoma Corp. | Mr. Pickle, Inc. |
| Mrs. Ressler's Food Products Co. | MS Intertrade | Mt. Pleasant Foods*Factory of West Liberty Foods, L |
| Muller-Pinehurst Dairy, Inc. | Mullins Food Products | Murray Cider Co., Inc. |
| Musco Family Olive Co. | Muskegon Dairy*Factory of Arla Foods USA. | My Own Meals, Inc. |
